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Figure 1. Na⁺ storage mechanism and rate performance of CBZG anode.

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Figure 2. a) Illustration of the synthesis process for CBZG. TG curves of b) the mixture of Zn(NO₃)₂·6H₂O and glycine, c) H₃BO₃, and d) the mixture of Zn(NO₃)₂·6H₂O, glycine and H₃BO₃.

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Figure 3. Structure and morphology of the obtained materials. a) XRD patterns of BZ, CBZ, and CBZG. b) SEM image of CBZG. c) Element mapping images of CBZG. d) TEM image of CBZG. e, f) High-resolution TEM images of CBZG.

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Figure 4. Na⁺ storage performance of CBZG as the half-cell anode in ether- or ester-based electrolyte. a, b) CV curves at 0.2 mV s^-1. c) Discharge/charge profiles at 0.05 A g^-1. d) Rate capability. e) Comparison between CBZG anode and previously reported SIB anodes in capacity. Cycling performance at f) 2 A g^-1 and g) 10 A g^-1.

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Figure 5. Na⁺ storage process analysis of CBZG as the half-cell anode in ether- or ester-based electrolyte. Discharge/charge profiles at 0.05 A g^-1 and ex situ XRD patterns under various stages in a) ether-based electrolyte and b) ester-based electrolyte.

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Figure 6. Kinetics analysis of Na⁺ storage of CBZG anode in ether- or ester-based electrolyte. a, b) CV curves at different scan rates. c) b-value calculation.  d, e) Capacitive contributions at 1.0 mV s^-1. f) Capacitive contributions at different scan rates. g) GITT potential profiles with a pulse current of 0.05 A g^-1 for 0.5 h, followed by a 1.0 h relaxation process. h) Na⁺ diffusion coefficients calculated from the GITT potential profiles for the discharge process. i) Nyquist plots.

  ÎÄÕÂ朽ӣºCombustion activation induced solid-state synthesis for N, B co-doped carbon/zinc borate anode with a boosting of sodium storage performance

  DOI£º10.1002/advs.202207751

  http://doi.org/10.1002/advs.202207751

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